Oak Mfg. Co. 9000 Schematic

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Product Information:
Model:9000
Manufacturer:Oak Mfg. Co.

Schematics Content:

Page 1:

DESCRIPTION OF CYCLE

In order to observe the action of the changer mechanism as it progresses through a complete cycle of operation, disconnect motor plug from power supply so that Turntable can be rotated by hand. Move the front Control Button to the right so that only the word "AUTO" is visible. Then slide the " START REJECT" Control Button to the left as far as it will go and release it. The operation of all parts of the changer can now be examined as the Turntable is rotated clockwise.

SETTING FOR DESIRED RECORD SIZE
1. The position of the 10-12" Control Button determines the size of records that may be played on the changer
2. When this Control Button is in the 12 inch position, the Index Pin (19) is stopped by the front notch on the Index Stop Lever (43). The horizontal motion of the Pick-up Arm (1) is thus stopped. After the Pick-up Arm Lift Pin (17) and Pick-up Arm (1) are lowered, the Pick-up Arm will land in the correct position to start playing a 12 inch record.
3. When the Control Button is in the 10 inch position, the Index Pin (19) is stopped by the rear notch on the Index Stop Lever (43). Since this notch is deeper than the front notch, the Pick-up Arm (1) will be stopped at a point closer to the Center Post. After the Pick-up Arm Lift Pin (17) and Pick-up Arm (1) are lowered, the Pick-up Arm will land in the correct position to start playing a 10 inch record.

SETTING FOR DESIRED NEEDLE
1. Operating the Needle Selector (62) rotates Crystal Cartridge (2) to engage the proper Needle.

Page 2:

DESCRIPTION OF CYCLE (Continued)

TRIPPING To trip mechanism and start change cycle, slide " START REJECT " Control Button down and to the left as far as it will go and then release it.

1. Operating the " START - REJECT � � � Control Button causes the Reject Link (39) to move the Trip Release Assembly (23). This Assembly releases the Starting Pawl (24) and allows the Pawl to engage the Turntable Gear (59) and start the change cycle.

FUNCTION OF THE MAIN CAM (20)

1. The grooves on the upper surface of the Main Cam direct and co-ordinate the motions of the Pick-up Arm Lift Pin (17), which elevates the Pick-up Arm (1) during the change cycle and the Pick-up Arm Follower (18), which moves the Arm horizontally during the change cycle.

DISPLACEMENT OF A RECORD

1. While the Main Cam (20) is turning, the Eccentric (26) turns the Record Support Arms (32) through the action of the Eccentric Arm (27) and Tie Bar (29).

2. During the first half of the change cycle the Record Support Arm Shafts (30 and 31) and Record Support Arms (32) rotate in a clockwise direction. The two lower changer blades eject the bottom record loaded on the changer and the two upper changer blades slide under the remainder of the stack.

3. During the remainder of the cycle, the Record Support Arm Shafts (30 and 31) and Record Support Arms (32) rotate in a counter-clockwise direction. The upper changer blades now slide out from under the stack of records and drop the stack onto the lower changer blades.

MOVEMENT OF PICK - UP ARM

1. As the Main Cam (20) starts to rotate, the Pick-up Arm Lift Pin (17) raises the Pick-up Arm (1) by riding up the outer ridge of the Main Cam (20).

2. After approximately a quarter turn of the Main Cam (20), the Pick-up. Arm Follower (18) enters the groove in the Cam. The groove is cut so as to push the Pick-up Arm Follower (18) and thus the Pick-up Arm (1) to the right.

3. After approximately a three-quarter turn of the Main Cam (20), the groove in the Cam causes the Pick-up Arm Follower (18) and Pick-up Arm (1) to move to the left.

4. Near the end of the cycle, the outer ridge of the Main Cam (20) slopes downward and the Pick-up Arm Lift Pin (17) and Pick-up Arm (1) are lowered.

Page 3:

DESCRIPTION OF CYCLE (Continued)

5. The position at which the Pick-up Arm sets down on a record may be adjusted by means of the Index Screw (41) located on the upper right hand side of the changer base. The Screw acts as an eccentric in.changing the position of the Index Stop Lever (43), A complete description of this method of positioning the Arm and another method which will give greater range of adjustment if required may be found in the " Trouble Shooting Chart under the section entitled "Pick-up Arm (i) sets down at wrong starting point on record".

6. Elevation of the Pick-up Arm is adjusted by turning the Lift Adjusting Screw (5) located on the underside of the Pick-up Arm (1). For complete adjustinent details, see section of " Trouble Shooting Chart "entitled" Pick-up Arm elevation is too high or too low during change cycle ".

COMPLETION OF MAIN CAM CYCLE

1. After one complete revolution of the Main Cam (20), the notch in the teeth of this Cam will disengage the Main Cam from the Turntable Gear (59). The Cam Stop Roller (55) enters a groove on the side of the Main Cam (20) which serves to locate its rest position.

2. The Starting Pawl (24) contacts and again becomes held by the Trip Release Assembly (23).

ACTION OF TRIP MECHANISM AT END OF RECORD

1. During the playing portion of the cycle the Trip Latch (25) contacts the serrated edge of the Trip Release Assembly (23). While the Pick-up Arm (1) is advancing toward the Center Post (53) the Trip Latch (25) will not move this assembly. When the Needle (3) enters the spiral groove at the end of the record, the motion of the Pick-up Arm away from the Center Post will cause the Trip Latch (25) to operate the Trip Release Assembly (23). The Starting Pawl (24) will be released and will engage the Turntable Gear (59) to start the change cycle.

"MANUAL" CONTROL OF CHANGER

1. When " AUTO - MANUAL " Control Button is moved down and to the left so that the word
"MANUAL" is visible, the Starting Pawl (24) is held in such a position as to be unable to engage the Turntable Gear (59) and it is impossible for the changer to cycle automatically. Forward or reverse recordings may now be played by manually placing the Pick-up Arm on the record at the desired starting point.

STOPPING

1. To stop the changer (NOT DURING CHANGE CYCLE), slide the " ON - OFF " Switch (46) to its off position. Power to the Motor (48) will be turned off.

Page 4:

LUBRICATION
The record changer leaves the factory completely lubricated and under normal conditions this lubrication should be sufficient for approximately one year or 1,000 hours of operation. When operated under extreme conditions of dust or heat, lubrication should be performed as frequently as required.

NOTE: AVOID EXCESSIVE LUBRICATION. Do not permit any oil to get on the rubber tire of the Idler Wheel, on the motor hub, on the Trip Release and arting Pawl mechanism, or on the drive rim of the Turntable. Any oil on these places should be removed with Carbon Tetrachloride.

A drop of good machine oil once a year on the Center Post Assembly bearings, motor bearings, small cot ton oil wick on Main Cam, and frictional surfaces will provide the necessary lubrication.

PARTS LIST

Page 5:

TROUBLE SHOOTING CHART

SYMPTOM Turntable fails to start after actuating "ON - OFF " Switch (46).

CAUSE
1. No Power.
2. Idler Wheel (52) not engaging turntable.
3. Defective " ON - OFF " Switch (46).
4. Defective motor.
5. Broken Rubber Drive Belt (16),
6. Binding in changer mechanism.

REMEDY
Check to determine if there is power at the wall outlet by disconnecting radio power cord and connecting a lamp to same outlet. Check to see that pivot lever under Idler Wheel (52) is free. Also be sure that spring which pulls Idler Wheel (52) toward Turntable is hooked to motor frame and has sufficient tension. Check continuity across switch contacts. Replace switch if necessary Check and replace if necessary. If Speed Selector is in " 33" position and Turntable fails to rotate, check condition of Rubber Drive Belt and replace if necessary. For analysis of fault see symptom entitled " Changer stops while changing a record ".

Changer refuses to cycle when " START - REJECT " Control Button is operated.

1. Broken or weak Starting Pawl Spring (21).
2. Bent Reject Link (39).

If the Starting Pawl Spring (21) is defective, the Starting Pawl (24) will not engage the Turntable Gear (59) when the Trip Release Assembly (23) is operated. Replace this Spring. Rear end of Reject Link (39) must contact side of Trip Release Assembly (23). Straighten Link.

Changer stops while changing a record.

1. Grease on Idler Wheel (52) or Turntable rim.
2. Idler Wheel (52) not engaging Turntable properly.
3. Binding in changer mechanism.
4. Low line voltage.
5. Weak Motor (48).

Clean with Carbon Tetrachloride.

Check to see that pivot lever under Idler Wheel (52) moves freely. Also be sure that spring which pulls Idler Wheel (52) toward Turntable is properly engaged and has sufficient tension. Check for binding at points where Turntable Gear (59) engages Main Cam (20); also at base of Center Post Assembly (53). If Tie Bar (29) is bent and is rubbing against changer base, straighten or replace Tie Bar Assembly (29), Make sure Tie Bar (29) does not rub or jam against frame of Center Post Assembly (53). If this condition occurs, proceed as follows:
a. Loosen the bolt and Drive Crank Nut (28) at the end of the Eccentric Arm Assembly (27).
b. Rotate the Turntable clockwise by hand until the changer cycle is completed.
c. Move Tie Bar Assembly (29) [ Record Support Arm Shafts (30 and 31) and Record Support Arms (32) will also move ] until Tie Bar (29) is approximately 1/32" from the frame of the Center Post Assembly (53), NOTE: There are two positions of the Tie Bar (29) at which it may be placed approximately 1/32" from the frame of the Center Post Assembly (53). Set the Record Support Arms (32) for automatic operation. Then make sure that at the proper separation of the Tie Bar and the frame of the Center Post Assembly, the lower blades of the Record Support Arm Assemblies (32) are nearer the Center Post (53) than the upper blades.
d. Retighten the bolt and Drive Crank Nut (28), making sure that the flange of the Nut faces toward the Record Support Arm Shaft (31).
e. Operate " START - REJECT " Control Button and rotate the Turntable clockwise by hand through the changer cycle. If the adjustment has been properly made, the Tie Bar (29) will no longer come in contact with the frame of the Center Post Assembly (53).

Lubricate changer mechanism if necessary; see section entitled "Lubrication ".

Line voltage should not be less than 105 volts. If after checking the above items, the changer continues to stall, it may be assumed that the Motor has low torque and should be replaced.

Page 6:

TROUBLE SHOOTING CHART (Continued)

SYMPTOM Changer cycles continuously.

CAUSE
1. Bent arm on Trip Re lease Assembly (23).
2. Bent Starting Pawl (24).
3. Broken or weak Reject Spring (37).

REMEDY
If the Trip Release Assembly (23) becomes bent, the Starting Pawl (24) may not become held by this Assembly at the completion of the Main Cam cycle. Straighten or replace Trip Release Assembly (23).

If the portion of the Starting Pawl (24) which contacts the Trip Release Assembly (23) becomes bent, the Starting Pawl may not become held by this Assembly at the completion of the Main Cam cycle. Straighten Starting Pawl (24). A defective Reject Spring (37) will not return the " START REJECT" Control Button to its original position and may keep the Trip Release Assembly (23) from engaging the Starting Pawl (24), Replace this Spring.

Changer fails to cycle after playing a record.

1. Bent or broken Trip Latch (25).
2. Broken or weak Trip Latch Spring (22).
3. Worn serrated edge of Trip Release Assembly (23).
4. Broken or weak Starting Pawl Spring (21).
5. No eccentric or Spiral groove at center of record.

The Trip Latch (25) must contact and exert pressure against the serrated edge of the Trip Release Assembly (23) at the end of a record. Straighten Trip Latch or replace Crank Assembly (12),

A defective Trip Latch Spring (22) will prevent the Trip Latch (25) from contacting the Trip Release Assembly (23). Replace Spring.

If the serrated edge of the Trip Release Assembly (23) becomes worn, the Trip Latch (25) will not cause the Trip Release to release the Starting Pawl at the end of a record. Replace Trip Release Assembly (23).

If the Starting Pawl Spring (21) is defective, the Starting Pawl (24) will not engage theTurntable, Gear (59) when the Trip Release (23) is operated. Replace this Spring. The Needle (3) must enter the spiral groove at the center of a record before the Trip Latch (25) will operate the Trip Release Assembly (23). Old records which do not have this groove will prevent automatic operation of the changer.

Record drops on one side only during change cycle OR Both sides of record do not drop simul. taneously during cycle.

1. Record Support Arms (32) incorrectly adjusted.

Proceed as follows:
a. Make sure that the Record Support Arms (32) are set for automatic operation and the changer has completed its change cycle.
b. Loosen the three bolts and Drive Crank Nuts (28) that hold the Tie Bar Assembly (29) and Eccentric Arm Assembly (27)
to the Record Support Arm Shafts (30 and 31).
c. Move the Tie Bar Assembly (29) until it is approximately 1/32" from the frame of the Center Post Assembly (53). NOTE: There are two positions of the Tie Bar (29) at which it may be placed approximately 1/32" from the frame of the Center Post Assembly (53). Make sure that at the proper separation of the Tie Bar and the frame of the Center Post Assembly the Tie Bar (29) extends closer to the front right hand corner of the changer base than in the other position,
d. Then, holding the Tie Bar Assembly (29) in place, rotate Record Support Arms (32) and Record Support Arm Shafts (30 and 31) until lower changer blades are pointing in the general direction of the Center Post (53).
e. Place a 10" record on the lower changer blades of the Record Support Arms (32) (as done when stacking records for automatic operation) and adjust Record Support Arms (32) so that the record covers the same amount of space on the two lower blades. Also, make sure that the nearest portion of the upper changer blades is approximately 6" from the edge of the record.
f. Retighten the three bolts and Drive Crank Nuts (28). The flange of the Nuts should face toward the Record Support Arm Shafts (30 and 31).
g. Operate "START - REJECT" Control Button and rotate the Turntable clockwise by hand through the changer cycle. If trouble is not completely corrected, repeat this adjustment but make slight changes in the positioning of the lower changer blades with respect to the 10" record.

Page 7:

TROUBLE SHOOTING CHART (Continued)

Record fails to drop off Record Support Arms (32) at correct time during change cycle.

1. Record Support Arms (32) incorrectly adjusted.
2. Record size not standard.

For proper adjustment, see previous section of " Trouble Shooting Chart "entitled" Record drops on one side only during change cycle OR Both sides of record do not drop simultaneously during cycle ". A standard 10" record has a diameter of 974" + 1/32 and a standard 12" record has a diameter of 1176" + 1/32.

Erratic motion of Pick-up Arm (1) in horizontal, direction during change cycle.

1. Broken Pick-up Arm Follower (18).
2. Loose bolt and nut on Crank Assembly (12).

The groove in the Main Cam (20) directs the motion of the Pick-up Arm Follower (18) and the Pick-up Arm (1) in the horizontal direction. A broken Pick-up Arm Follower (18) eliminates or adversely affects this motion. Replace Crank Assembly (12).
The nut and bolt on the Crank Assembly (12) clamp the Crank Assembly to the shaft of the Pick-up Arm Assembly (1). If the nut and bolt are loose, horizontal motion between these two assemblies will be transmitted by friction only. Retighten according to section of " Trouble Shooting Chart "entitled" Pick-up Arm (1) sets down at wrong starting point on record ".

3. Weak or broken Extension Spring (13).

This spring is a safety device enabling the Pick-up Arm (1) to be moved horizontally beyond its normal operating range without causing injury to the changer mechanism. However, if the Extension Spring (13) is defective, horizontal motion between the Crank Assembly (12) and the Pick-up Arm Assembly (1) will be transmitted by friction only. Replace spring.

Erratic motion of Pick-up Arm (1) in vertical direction during change cycle.

1. Weak or broken Spring for Index Latch (14).
2. Weak or broken conical spring on Indexing Assembly (11),

This spring lowers the Indexing Assembly (11) when the Pick-up Arm Lift Pin (17) enters the depression on the outer ridge of the Main Cam. Replace this spring if it is found to be defective.
This spring is also instrumental in obtaining proper vertical motion of the Pick-up Arm (1). If this spring is found to be defective, replace Indexing Assembly (11),

Pick-up Arm Elevation is too high or too low during change cycle.

1. Lift Adjusting Screw (5) improperly adjusted.

When Pick-up Arm elevation is incorrect, proceed as follows:
a. Put twelve 10" records on the Turntable,
b. Slide " START - REJECT" Control Button to the left as far as it will go and then release it.
c. Rotate Turntable clockwise by hand until Pick-up Arm (1) and Needle (3) approach the stack of records.
d. Adjust the Lift Adjusting Screw (5) so that clearance be tween Needle and top record is approximately 48".

Pick-up Arm (1) sets down at wrong starting point on record.

1. Incorrect adjustment of set-down point.

The position at which the Pick-up Arm (1) sets down on a record may be adjusted by means of the Index Bushing Assembly (41). Proceed as follows:
a. Set changer for 12" operation and place a 12" record on the Turntable,
b. Slide " START - REJECT " Control Button to the left as far as it will go and then release it.
c. Rotate Turntable clockwise by hand until Pick-up Arm (1) and Needle (3) start to drop down to record.
d. Loosen nut on Index Bushing Assembly (41) and adjust screw of this assembly to drop Pick-up Arm and Needle at desired position on record. This position should place the Needle 5-11 / 16" from the Center Post (53).
e. Retighten nut on Index Bushing Assembly (41).
If the Index Bushing Assembly (41) does not provide sufficient range for adjustment, proceed as follows:
a. Make sure changer has completed its change cycle.
b. Loosen nut and bolt on Crank Assembly (12).
c. Move Pick-up Arm Follower (18) toward Center Post Assembly (53) as far as it will go.
d. Holding the Pick-up Arm Follower in this position, place Pick-up Arm (1) approximately 54" from Center Post (53),
e. Tighten nut and bolt on Crank Assembly (12).
f. Make final adjustment of set-down point using Index Bushing Assembly (41) as explained above.

Page 8:

TROUBLE SHOOTING CHART (Continued)

CAUSE
2. Weak or broken spring which operates operates Index Pin (19).
3. Defective spring which operates lever on inside surface of Main Cam (20),
4. Broken Pick-up Arm Follower (18), loose bolt and nut on Crank Assembly (12), or weak or broken Extension Spring (13).

REMEDY
A defective spring which operates the Index Pin (19) will not engage this Pin with the notches on the Index Stop Lever (43). Replace Indexing Assembly (11). The lever located on the inside surface of the Main Cam aids in obtaining the proper set-down point for the Pick-up Arm (1). It guides the Pick-up Arm Follower (18) during the final part of the change cycle. If the spring which operates this lever is defective, the Main Cam Assembly (20) must be replaced. See section of " Trouble Shooting Chart "entitled" Erratic motion of Pick-up Arm (1) in horizontal direction during change cycle ".

Tripping is possible with Control Button in "Manual" position.

1. Bent Starting Pawl (24),
2. Bent Manual Link (38).

If the portion of the Starting Pawl (24) which contacts the Manual Link (38) is bent, the Starting Pawl will not be kept from engaging the Turntable Gear (59). Straighten Starting Pawl or replace Main Cam Assembly (20). Rear end of Manual Link (38) must contact flange on Starting Pawl (24) when changer is set for manual operation. Straighten Link.

Improper "tracking" of Needle with record Needle slips out of grooves and skips portions of record.

1. Incorrect setting of Needle Selector (62).
2. Foreign matter in record grooves.
3. Badly worn record.
4. Badly worn Needle (3).
5. Incorrect adjustment of Needle Pressure Spring (7).

Make sure that Needle Selector (62) is in the correct position for playing the type of records on the changer. Clean record with record brush or soft camel's hair brush.

Examine record for scratches that may have destroyed continuity of grooves. Examine Needle for worn tip and replace if necessary. To remove and replace a worn or damaged Needle, proceed as follows:
a. If Standard Needle is to be removed, adjust Needle Selector (62) so that the words " 78 ONLY " appear at the top. If " Long Playing " Needle is to be removed, adjust Needle Selector (62) so that the words " 33 ONLY " appear at the top.
b. Loosen Set Nut for Needle (6) located directly below Needle.
c. Replacement Needles may be obtained by requesting the following parts: Standard Needle.. Part No. 507454, Long Playing " Needle. Part No. 507455 Do not attempt to use a substitute.
d. Insert Needle so that point extends away from Crystal Cartridge (2) and flat surface of shaft is against Set Nut (6). When tightening Nut make sure that Needle remains parallel to sides of Cartridge and point protrudes approximately 1/8" from lower frame of Needle Selector.
To eliminate the possibility of installing the Needles in the wrong, sides of the Crystal Cartridge, the shaft of the " Long Playing. " Needle is painted red. The pressure that the Pick-up Arm (1) exerts on a record is controlled by the Needle Pressure Spring (7). Using a Needle Pressure Gauge, the needle pressure should be between 8 and 12 grams. To change needle pressure, proceed as follows:
a. To decrease needle pressure, place a screwdriver in a notch of Adjusting Washer (8) and turn Washer by moving screwdriver upward.
b. To increase needle pressure, place a screwdriver in a notch of Adjusting Washer (8) and turn Washer by moving screwdriver downward.
In making this adjustment it will be necessary to disengage Adjusting Washer (8) from lip on Pick-up Arm Hinge (1).

Page 9:

TROUBLE SHOOTING CHART (Continued)

Slow Turntable speed.

1. Speed Selector (61) in wrong position.
2. Grease on Idler Wheel (52) or Turntable rim causing slipping.
3. Idler Wheel (52) not properly engaging Turntable.
4. Binding of drive parts.
5. Line voltage too low.
6. Operating temperature too low.
7. Faulty Motor (48).

Make sure that Speed Selector (61) is in the correct position for playing the type of records on the changer. Clean surfaces with Carbon Tetrachloride.

Check to see that pivot lever under Idler Wheel (52) is free. Also be sure that spring which pulls Idler Wheel (52) toward Turntable is properly engaged and has sufficient tension. Carefully check Center Post Assembly (53) for binding, Line voltage should not be less than 105 volts. If the changer has been stored in a cold room, the Turntable speed may be slower than normal. If, after checking the above six items Turntable speed is still too slow, then it may be assumed that the Motor is at fault and should be replaced.

Rumble or "wow"

1. Changer not floating freely on its mounting springs.
2. Improper motor mounting.
3. Worn tire on Idler Wheel (52).
4. Worn Pad for Needle Selector,

Be sure the four Base Mounting Screws used for mounting the changer have been screwed down as far as they will go.

Be sure that Motor (48) is mounted on Rubber Grommets (51).

Examine Idler Wheel (52) for flat spots on tire and replace Wheel if defective, A worn Pad will cause the Needle Selector (62) to rest against the Pick-up Arm (1). This will cause " needle talk-back ". Replace Needle Selector Pad.

PROCEDURE FOR REMOVAL AND REPLACEMENT OF MAJOR PARTS

NAME OF ITEM METHOD OF REMOVING OR REPLACING

Needle (3).

To remove or replace a Needle (3), proceed as follows:
a. If Standard Needle is to be removed, adjust Needle Selector (62) so that the words " 78 ONLY " appear at the top. If " Long Playing " Needle is to be removed, adjust Needle Selector (62) so that the words " 33 ONLY " appear at the top.
b. Loosen Set Nut for Needle (6) located directly below Needle.
c. Insert Needle so that point extends away from Crystal Cartridge (2) and flat surface of shaft is against Set Nut (6). When tightening Nut make sure that Needle remains parallel to sides of Cartridge and point protrudes approximately 1/8" from lower frame of Needle Selector.

Crystal Cartridge (2).

Remove the two Needles (3). Remove the two screws (and associated nuts and sleeves) which pass through the Needle Selector Assembly (62) and the Cartridge (2). Crystal Cartridge may now be removed by slipping the " quick disconnect " electrical connectors off the prongs at the rear of the Cartridge (2).

Center Post Assembly (53)

Removal of the Center Post Assembly (53), as well as the remainder of the drive mechanism, may be more easily accomplished if the changer has completed its change cycle. Remove the Turntable by lifting it up from changer base. Then remove the three Screws and Lockwashers (57).

To disassemble the Center Post Assembly (53), remove the two screws on this Assembly.

When reassembling the Center Post Assembly (53), make sure that the Large Ball Bearing (58) is properly seated in the base of the Assembly. To accomplish this, invert the upper portion of this Assembly and place the Ball Bearing (58) in the hollow at the base of the Center Post. Invert the lower portion of this Assembly and slide it over the Ball Bearing (58) as far as it will go. Insert and tighten the two screws. Then remount the Center Post Assembly (53) onto the changer base using the three Screws and Lockwashers (57).

If binding occurs after assembly,
a. Disassemble and place one drop of good machine oil in base of Center Post Assembly (53),
b. If mechanism still binds, remove Assembly. Remove the two screws on this Assembly, rotate the flange on the upper section of the Assembly 180 and replace the screws.

Page 10:

PROCEDURE FOR REMOVAL AND REPLACEMENT OF MAJOR PARTS (Continued)

NAME OF ITEM
METHOD OF REMOVING OR REPLACING

Eccentric Arm Assembly (27) and Tie Bar Assembly (29).

After the Center Post Assembly (53) has been removed, loosen the Drive Crank Nut (28) at one end of the Eccentric Arm Assembly (27) and remove the small screw and washer at the other end. The Eccentric Arm Assembly may then be easily removed. After the Eccentric Arm Assembly (27) has been removed, loosen the two Drive Crank Nuts (28) and slide the Tie Bar Assembly (29) off the two Record Support Arm Shafts (30 and 31). When reassembling, make sure that the flanges on the Drive Crank Nuts (28) face toward the Record Support Arm Shafts (30 and 31).

Main Cam Assembly (20).

After the Eccentric Arm Assembly (27) has been removed, the Main Cam Assembly will easily slide off its shaft.

Record Support Arm Assemblies (32) and Record Support Arm Shaft Assemblies (30 and 31).

After the Eccentric Arm Assembly (27) and Tie Bar Assembly (29) have been re moved, remove the Record Support Arm Caps (33). The Record Support Arms (32) and Record Support Arm Shafts (30 and 31) are now disengaged from the Base Assembly (35) and may be easily slipped off.

Pick-up Arm Assembly (1).

The Pick-up Arm Assembly (1) should not be removed from the changer unless it is to be replaced. There are is Small Ball Bearings around the top of the Pick-up Arm Shaft and 17 Small Ball Bearings in a circular slot near the bottom of the Pick-up Arm Shaft. These Bearings will fall out of their respective positions unless the changer is in a horizontal position when the Pick-up Arm Shaft is removed and unless removal is accomplished with extreme care.

To remove the Pick-up Arm Assembly:
a. Make sure changer is in a horizontal position.
b. Pull Phono Pick-up Cable to obtain "slack" in cable between Pick-up Arm (1) and changer base.
c. Loosen the bolt and nut on the Crank Assembly (12) and remove the Pick-up Arm Assembly by carefully lifting at its base.

When reassembling, the Pick-up Arm Shaft (1) must pass through each part of the Crank Assembly (12), and the hinge at the end of the Pick-up Arm (1) must be as close to the pick-up arm post of the Base Assembly (35) as possible.

Indexing Assembly (11) and Crank Assembly (12).

These two assemblies may be removed by loosening the bolt and nut on the Crank Assembly (12) and sliding these assemblies off the Pick-up Arm Shaft (1)

CAUTION: Separation of these two assemblies is not recommended unless one of the assemblies is to be replaced.

The Indexing Assembly (11) and Crank Assembly (12) may be separated by re moving the small "C" washer on the Index Pin (19) and the Spring and Pin for Index Latch (14 and 15).

When reassembling, make sure parts of Crank Assembly are in correct order and position. Hold hinge at the end of Pick-up Arm (1) tightly against pick-up arm post of Base Assembly (35) to prevent the 35 Small Ball Bearings around the Pick-up Arm Shaft from falling out.

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